Lead Data Engineer

At Mindbox we connect top IT talents with technology projects for leading enterprises across Europe.

We are seeking an experienced Lead Data Engineer to join our client’s global development team and drive the design and implementation of next-generation data platforms. You will work closely with teams in Poland, the UK, India, and China to enhance platform capabilities, improve performance, and ensure operational excellence.

Sounds like your kind of challenge?

#LI – Hybrid: 6/month form the office in Kraków

What you’ll be doing

Analyse and capture functional & non-functional requirements for near-term deliveries and long-term evolution.
Design and implement data pipelines and table management workflows using PySpark and Apache Iceberg.
Drive Apache Iceberg performance and cost optimisation (e.g., file sizing, partitioning, clustering, query efficiency).
Manage and improve Apache Iceberg maintenance (compaction, rewrite, snapshot/metadata management, orphan file handling).
Apply strong understanding of Iceberg internals (metadata layout, schema evolution, partition specs).
Ensure high engineering standards via code reviews, test automation, CI/CD, observability, and production readiness.
Provide support for owned services and datasets, including on-call duties.
Mentor and coach junior engineers; lead technical design discussions.

Note: Detailed project information will be shared during the recruitment process.

What you get in return

Flexible cooperation model
Hybrid work setup – 6/month form the office in Kraków
Collaborative team culture – work alongside experienced professionals eager to share knowledge
Continuous development – access to training platforms and growth opportunities
Comprehensive benefits – including Interpolska Health Care, Multisport card, Warta Insurance, and more
High quality equipment – laptop and essential software provided

Who we’re looking for

Strong hands-on experience with PySpark (DataFrame APIs, tuning, debugging).
Practical knowledge of Apache Iceberg, including:
- Optimisation techniques (partitioning strategy, file sizing, layout).
- Internal architecture understanding (snapshots, manifests, schema evolution).
- Maintenance operations (rewrite/compaction, orphan file cleanup, metadata handling).
Solid software engineering fundamentals: clean, testable, maintainable code, problem-solving.
Experience with CI/CD pipelines, observability, stability improvements in production systems.
Ability to work in global teams, excellent communication skills.
Ownership mindset and responsibility for end-to-end delivery.
Fluency in English (spoken & written).

Joining this project you’ll become part of Mindbox – a tech-driven company where consulting, engineering, and talent meet to build meaningful digital solutions. We’ll back you up every step of the way, accelerate your development, and ensure your skills make a difference.

Lead Data Engineer

Kraków

B2B

1700 - 1850 PLN/MD netto + VAT

Apply for position

I will handle your recruitment

Anna Rodak-Bucka

SUPPORT & BENEFITS

Private healthcare

Fast access to doctors and medical tests.

Mindbox fully covers the individual package. You can extend the coverage to your partner and family on preferential terms. A wide network of medical providers and clear rules for everyday use.

Multisport

Energy that pays off.

We cover 50% of the card cost. You get access to thousands of sports facilities across Poland, plus a convenient mobile app. Additional cards for family members are available.

Training & development

Practical support for your career growth.

We co‑fund courses, certifications and conferences under a clear Training Policy. You also get access to a library of recorded webinars and trainings – available whenever you need them.

Eyewear or contact lenses co‑funding

Clear vision means comfortable work.

Up to PLN 500 every two years, with an additional PLN 300 available in justified cases. Simple reimbursement, regardless of your form of cooperation.

Group life insurance

Real protection from day one.

Option I is fully funded by Mindbox, Option II is co‑funded. You can include your partner and adult children, with coverage that also applies to treatment and hospitalisation abroad.

Ongoing support from the Talent Network Development

You’re not on your own in a project.

Regular contact, quick response and a partnership‑based approach. You focus on your work — we help take care of the rest.

Regular integration meet‑ups

Relationships that work beyond the project.

Cyclical meet‑ups for contractors in major cities across Poland. A space to talk, exchange experience and stay in real contact with the Mindbox team.

Annual company‑wide integration

One event. The whole community.

A two‑day company gathering with accommodation, transport and a full activity programme. Time to connect teams from across Poland and build shared experiences.